Title:
音響通信システム、音響送信装置、プログラムおよび音響信号送信方法
Document Type and Number:
Japanese Patent JP7385532
Kind Code:
B2
Abstract:
To provide an acoustic communication system, an acoustic transmission device, an acoustic reception device, a program, and an acoustic signal transmission method that can embed embedded information in an acoustic signal with appropriate embedding intensity in a sound electronic watermark technique.SOLUTION: An acoustic communication system 10 includes an acoustic transmission device 20 and an acoustic reception device 30. The acoustic transmission device 20 includes: an embedding unit 28 that generates an acoustic signal AS by embedding embedded information SC in an original signal OS; a sound emission processing unit 29 that causes a speaker 12 to emit the acoustic signal AS; and a compressor 24 that compresses the original signal OS before the embedded information SC is embedded. The acoustic reception device 30 includes: an extraction unit 33 that extracts the embedded information SC from the acoustic signal AS collected by a microphone 31; a display unit 17 that outputs information; and a second control unit 32 that causes the display unit 17 to output provision information corresponding to the embedded information SC extracted by the extraction unit 33.SELECTED DRAWING: Figure 4
Inventors:
Higashi Kei
Ryo Nakaya
Ryo Nakaya
Application Number:
JP2020104837A
Publication Date:
November 22, 2023
Filing Date:
June 17, 2020
Export Citation:
Assignee:
toa corporation
International Classes:
G10L19/018; H04B11/00
Domestic Patent References:
| JP2019054351A | ||||
| JP2006340374A | ||||
| JP2011151436A | ||||
| JP2010085737A | ||||
| JP2019096947A | ||||
| JP10097761A | ||||
| JP2003536113A |
Attorney, Agent or Firm:
Tetsuya Hamana